The endocrine system is very dynamic and has ties to most‚ if not all of the other major systems of the body. It is responsible for production of hormones and the regulation of them as well. These hormones act as chemical messengers within the body. Through several differing mechanisms‚ they are able to trigger very specific responses in target cells or organs. This is what enables the endocrine system to guide growth‚ development‚ reproduction‚ and behavior‚ among many others as well.
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-We have 2 parts in our nervous system: The central nervous system (CNS) is the nerves in our brain and spinal chord. The peripheral nervous system (PNS) is a network of nerve cells in the rest of our body. -Our nervous system detects stimuli and allows us to react to them. -Stimulus: a change‚ action or occurrence in the environment that can cause an organism to respond. Eg. Light‚ noise‚ pressure… How do we detect stimuli? -We have sensory organs that detect particular stimuli eg. Skin What
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Respiration §The act or process of inhaling and exhaling §Functions of Respiratory System §Gas exchange between blood and air §Move air to and from exchange surfaces §Protect exchange surfaces from environmental variations and pathogens §Produce sound §Detect olfactory stimuli Types of respiratory organ §1. Aquatic respiration §A. cell membrane – amoeba‚ paramecium §C. gills – mollusks and arthropods §1. papulae – finger-like dermal branchiae §Eg. Starfish
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Exercise No. Respiratory System I. Introduction Oxygen is a very important element which our body needs. Without oxygen life is not possible without oxygen which helps in producing energies that our body cells need. But‚ how do we acquire this oxygen needed by the body? It is by the process called Respiration. Respiration is a process of taking in and out of air from the body. There are two kinds of respiration called cellular respiration and external respiration. Cellular respiration
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Importance of Media Today Today‚ media has become almost as necessary as food and clothing. It is true that media is playing an outstanding role in strengthening the society; it is a mirror of the society. Its duty is to inform‚ educate and entertain the people. They help us to know what is going on around the world. They put their lives in danger during attacks or a natural disaster‚ just to inform us of the situation. It is partly because of them that awareness is spreading in the society
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Watching movies is a wasting of time. Movies or motion pictures have been around ever since man first discovered and invented cameras‚ and‚ in fact‚ even before that‚ through animate cartoons. It is a form of entertainment that is extremely popular in the world at large‚ thanks to dedicated filmmakers‚ modern advanced CGI (Computer-Generated Image) and increase in well-trained actors. However‚ in my opinion‚ watching movies is a huge waste of time for several important reasons. First
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Merriam Webster defines entertainment as “Amusement or pleasure that comes from watching a performer‚ playing a game etc.” or “The act of assuming or entertaining people” (“Merriam Webster”). The history of Walt Disney Studios and history of Cheerleading uniforms could be the reason why bullying has affected Makayla Raleigh’s life and why polar bears are now listed as threatened. History of Walt Disney‚ Bullying‚ Makayla Raleigh‚ the evolution of cheerleading uniforms‚ and polar bears are all broad
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machine able to broadcast both sound and vision goes back to 1875. But only in 1926 a Scottish engineer turned the idea into a practical reality. John Logier Baird produced the first TV pictures just 8 years after the World War I. Soon his original system was improved and in 1936 Britain’s first regular TV programme went on the air. But Great Britain wasn’t the only country-producing programmes. Other European countries were also involved in the early days of TV. US television boomed in the late 40"s
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ENDOCRINE SYSTEM 1) KNOW ALL OF THE ENDOCRINE GLAND & HOROMONES * Hypothalamus Although it is part of the brain‚ the hypothalamus secretes several hormones and is very closely related to the activity of the endocrine system. * The hormones it secretes are: * Releasing hormones – stimulate the secretion of specific anterior pituitary hormones * Release inhibiting hormones – inhibit the secretion of specific anterior pituitary hormones Pituitary * A small
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The endocrine system is a control system of ductless glands that secrete chemical "instant messengers" called hormones that circulate within the body via the bloodstream to affect distant cells within specific organs. Endocrine glands secrete their products immediately into the blood or interstitial fluid‚ without storage of the chemical. Hormones act as "messengers‚" and are carried by the bloodstream to different cells in the body‚ which interpret these messages and act on them. Typical endocrine
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